Folding chair frame



FIG. 1 is a rear, left and top perspective view of a folding chair frame, showing our new design;

FIG. 2 is a rear, left and top perspective view of the folding chair frame shown in a folded configuration;

FIG. 3 is a front, right and bottom perspective view thereof;

FIG. 4 is a front view thereof

FIG. 5 is a rear view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a left side view thereof;

FIG. 8 is a top plan view thereof; and,

FIG. 9 is a bottom plan view thereof. 

CLAIM The ornamental design for a folding chair frame, as shown and described. 